Means for taking samples of powdered substances or liquids.



T. ROBERTS. FOR TAKING SAMPLES 0P POWDBEED SUBSTANCES OR LIQUIDS.

APPLICATION TILED 001210, 1912, 1,101,568. Patented June 30,1914.

5 SHEETS-SHEET 1 MEANS T. ROBERTS. MEANS FOR TAKING SAMPLES 0F POWDER-IDSUBSTANCES 0R LIQUIDS.

APPLIGATION FILED 00119, 1912.

1,101,568. Patented June 30,1914.

5 SHEETSWSHEET 2 T. ROBERTS.

MEANS FOR TAKING SAMPLES OP POWDERED SUBSTANCES on LIQUIDS. APPLICATIONFILED 0013.19, 1912. 1,101,568, Patented June 30,1914.

5 SHEETS SHEET 3.

11 1 111 Ala? B 112 120 T. ROBERTS.

MEANS FOR TAKING SAMPLES OF POWDEEED sussmuoss 0R LIQUIDS.

Patented June 30, 1914.

APPLICATION FILED OOT.19,1912.

T. ROBERTS.

MEANS FOR TAKING SAMPLES OF POWDERBD SUBSTANCES 0R LIQUIDS APPLICATIONFILED 0OT.19,1912.

1 1 0 1,568. Patented June 30, 1914,

THOMAS ROBERTS, OF BOLTON, ENGLAND.

MEANS FOR TAKING SAMPLES OF POWDERED SUBSTANCES OR LIQUIDS.

Specification of Letters Patent.

Patented June 30, 1914.

Application filed October 19, 1912. Serial No. 726,590.

T 0 all whom it may concern:

Be it known that I, THOMAS RoBnR'rs, a subject of the King of GreatBritain, and resident of 33 Deane road, Bolton, 1n the county ofLancaster, England, have invented a certain new and useful Improvementin Means for Taking Sample's of Powdered Substances or Liquids, of whichthe following description, together with the accompanying sheets ofdrawings, is a specification.

This invention relates to apparatus or devices for taking samples ofmaterial such as powdered substances or liquids, and refers particularlyto apparatus in whlch the devices are operated by clockwork In carryingout my present invention I provide apparatus whereby the devices whichactually take the samples are not operated directl by a clock as usuallyheretofore done, but are merely controlled by clockwork and are operatedelectrically, by which means I may employ one clock or clockwork deviceto control any suitable number of sampling machines or apparatus, whilesaid clock or clockwork need not be mounted in proximity to the samplingmachines as is the case with those of ordinary consti uction, whereinthe clock or clockwork is exposed to the dust, dirt or fumes of or inthe room wherein it is fixed, but may be fixed at a distance therefromand out of reach of the operative who attends to the machine. Thesamples may be taken periodically at predetermined times arranged by theclock, or separate or additional samples may be obtained by, operating aswitch or switches located say in the office of the works or othercentral place.

In order that my said invention may be readily understood, I havehereunto appended sheets of drawings in which Figure 1 is a sideelevation of apparatus for taking samples of powdered substances,constructed in accordance with my invention; Fig. 2 is a plan of saidapparatus with the cover thereof, as hereinafter described, removed;Fig. 3 is a sectional side elevation of said apparatus; Fig. t is asectional plan of certain parts hereinafter referred to; Figs. 5 and (Sare end elevations of a tin or receptacle for receiving samples ofpowdered substancesyFig. 7 is a sectional eleva tion therw Fig. 8 is asectional side elevation a nmehine for taking samples of liquids- 9 is aplan thereof; Fig. 10 is an elevation of a modified form of apparatusfor taking samples of liquid; Fig. 11 is a diagram showing the clockworkand its connections to the sample taking apparatus;

Figs. 12, 13, 14 and 15 are detail views illustrating means forautomatically arresting the operation of the machine when thereceptacles have all received their samples.

Similar letters and figures of reference indicate like parts throughoutthe several views.

B is a base plate having a rod or upright A on .which is rotatablymounted a disk or plate 1 provided with teeth 2 (Fig. 4). Upon the plate1 are mounted receptacles 3, these being held in position, if desired,by socket members 4 at the bottom of the receptacles which fit overextensions or radial arms 5 of the disk 1. The disk 1 is free to rotateand is held under control by the escapement 6 pivoted on a fixed pin 7and acted upon by a spring 8. The escapement 6 has its ends 9, 10,shaped as shown so that when the part 9 is withdrawn from contact withone of the teeth 2 of the disk 1 the end 10 will be caused to engagewith another tooth to hold said disk against rotation until released,when the end 9 will engage with the next or succeeding tooth.

The coiled spring 11 is mounted within the box 12 forming part of theratchet disk 1' and causes the rotation of said disk when liberated bythe escapement 6. Connected to the escapement is the armature 13 of anelectro-magnet 14 which is arranged to have a circuit completed throughit in the manner hereinafter described, to control the movements of theescapement. The receptacles 3 are provided with covers 15, 16,, carriedby hinge pins 17, 18, respectively. The pin 17 has mounted upon it thearm 19, while the pin 18 has fixed upon it the two armed levers 20, 21.The arm 19 is arranged to come into contact with a suitably supportedcam rib 22 indicated by dotted lines in Fi 5. Normally the hinged coversare closed, as indicated. in Fig. 6, the arms 19, 20, 21,

being lowered. The cam rib 22 is suitably mounted in fixed position sothat as each receptacle 3 approaches position to receive material, theend of arm 19 engages the cam rib and is swung upwardly to the positionShown in Fig. 5, said arm engaging arm 20 and swinging that one upwardlyalso, so that the covers 15,16, are opened. After passing the cam r b22, the weight of the arms 19, 90, 21, actingfirst, and then the tacles3 are also provided with openings 3 through which air may escape at thetime the samples are being fed to said receptacles.

The plate 23 which is mounted on a rod A extends over all thereceptacles 3 with the exception of an opening which is below a chute orchannel 24," the base of which is indicated at 25 in Fig. 3, as mountedon the plate or cover 23. The chute has openings 26 for the passage ofvalve plates 27, 28, the arms 29, 30 carrying said plates being hingedat 31 and extending upwardly at. 32, 33, to form a chamber or box theupper end of which is closed when in the position incated by Fig. 1, butwhich is open when the plates 27, 28 are caused to approach each other.The plates 27, 28, a portion of the chute 24, and the box members 32,33, form a measuring chamber for the powdered substance as hereinafterdescribed. The arms 29, 30, are provided with projecting pins or pinshaving rolls 34, 35, mounted upon them. Brackets 36. 37, are supportedby the base niece .Fulcrumed at 38, 39 on the brackets 3'1, 37. arelevers 40. 41, the ends of which act on the rolls 34, 35. Said leverscarry armatures 4'2, 43, of electro-magnets 44, 45, an electricalcircuit being formed through these latter at the times and in the mannerhereinafter described. On the completion of said electrical circuit thearmatures 42,43, are drawn downwardly, thus causing the levers 40,41,t0operate the arms 29,30, so as to cause the members 32, 33 of the chamberfor the reception of the powdered substances to be separated and thevalve plates 27, 28 to approach each other, so as to retain the powderedsubstances in said chamber, which thus forms a measuring device. Thearmatures 42, 43, are guided in slots 46, 47, formed in the brackets 36,37 The measuring chamber above described is so mounted relatively to themain chute 48 of a flour milling or other apparatus, that the materialdescending through said chute can pass saidmeasuring chamber whenclosed, and at such times when it is desired. to take a sample and themeasuring chamber is opened, then some of the material will enter saidchamber.

In order to cause samples to be periodically'takcn, the electricalcircuits which are completed through the elctro-maguets 14, 44, 45, arecontrolled by clockwork mechanism, and -this clockwork mechanism may bemounted at any desired distance from the sample taking device. The firstcirCuitto be completed is that through the electro-mag nets 4.4, 45, bymeans of which a sample is permitted to enter the measuring chamber,such circuit remaining closed for a sutlicicnt length of time for saidmeasuring chamber to receive its full quantity, after which the circuitis broken. Immediately afterward a circuit is completed through theelectromagnet 14 by means of which the escapement 6 1s moved so that itsend 9 releases the disk 1, its other end 10 coming into contact withone'of the teeth 2 in said disk 1. This electrical circuit is onlynecessary to be of momentary duration, as immediately it is broken thespring 8 releases the end 10 from the tooth -in the plate 1 and causesthe end 10 to engage with the next or succeeding tooth 2, thus the nextor succeeding receptacle will. be in position to receive its sample ofpow dered substance.

49 (Fig. 11) is a disk mounted in any convenient position, andis rotatedby any appropriate and well known clockwork mechanism so as to rotatesay once in every twentyfour hours, such ordinary clockwork train notbeing necessary to illustrate in the drawings. Arranged upon the surfaceof this disk 49 are projecting parts 50, 51, 52, of any appropriatenumber and'of varying lengths. These projecting parts, which forconvenience I shall hereinafter refer to as tappets, pass under, so asto move, an adjustable catch \Vhen three different sizes or lengths oftappets 50, 51, 52, are made use of the catch 53 is arranged to occupyeither one of three different positions. \Vhen near the periphery ofthcdisk 49 it will be acted 5 upon by all the tappets 50, 51, 52, (which inthe device illustrated are 48 in number); when moved farther inward ortoward the center of said disk 49 only the tappets 51., 52, will actupon said catch, while when moved farther inward still, only the tappetsmarked 52 will act upon the catch. The adjustment of the catch 53 iseffected by a screw 54 mounted in appropriate framework and passingthrough a nut 55 forming part of a movable bracket 55 having an arm towhich lever 56 is pivotally connected at. 57, said lever carrying thecatch 53 and having a spring 58 connected to it. The lever 56, throughthe screw 59, actuates the lever 60, fulcrumed at 61 and having itsopposite arm acted upon by a spring 62.

Mounted in suitable proximity to the lever 60 is the plate or quadrant63, to which; is connected at 64 one of the conductors 65 from anelectrical main or other source or supply of current such as a battery66. The other conductor 67 leads through a switch 68 to anelectro-magnet 69 (required for purposes hereinafter described) and thento the terminal 70 mounted upon the metal frame work carrying the lovers56, 60 and other parts. 'It will be seen that On the catch 53 beingmoved by any of the tappets50, 51, 52, it will bring the lever 60 on tothe quadrant or plate 63, so as to complete an electrical circuit. Thiscircuit is only required to cause the completion of another circuit forenabling the filling of the sample as hereinafter described, and saidcircuit is broken immediately onthe tappet 50, 5 1 or 52 leaving thecatch '53. The period during which the catch 53 ts engaged by thetappets'fiO, '51; F

52 iscontrolled by the screw 71. r

Th,"electro-magnet 69 is provided with an armature 73 carrying a screw74,. the latter bearing on one armof atwo-armed lever 75, fulcrumed at"[6 and ca rryin'g at'its other end a brake 77 which makes contact witha fly or fanr78. The fly or fanis rotated by a clockworktrai115,saidclekwork train also rotatingthe shaft 79. Only a smallportion of this'clo ckwork train is shoii'n, as it is of any well known'construc-fl The parts shown are: the shaft 180,.

" propri r tion. the; wheel '1 81, "82,-and shaft 79; 'Agnyzepnmjnher Hbetween he gear-S2 and said shaft, 79, w-l iile another train otflgea rsintervenes between work train, including the" members "(9, 80, 81, 89,and the switch device's, will-be hereinafter referred to astheregulating cloclework mechanism to facilitate. a distinction, fromthe ordinary clockwork mechanism liereinbefore referred toes operatingthe disk 49. 85, the cam 84 having a notch 86 formed in it for thereception, at ce-rtain times, of the lug 87 on the lever 88 which isfulcrumed cam 85 operates a spring arm" 5):; whichcarrles at its upperend a contact Stoperatmg in connection with "a eontact working of themachine as hereinafter descri lwd, it is ne essary that two'felectricalrireuits should he :eompleted at xlifi'erent times by the (Cams 8i, the(al asing-g, of the circuits hein; e'ilc. ed by. the contacts 01,

closeil h the r-ontaetslll, byrinea is of a minim-tor 97 from the mainG7 to. thcbattor 6, contact 9'), the circuit including the arm 90,terminal 98, terminal 99, and the elei wniagnets 4t, 45. The othercircuit infludos a eniductor 100 from the main (J7, 'contart 5H, springarm 'fli'i terminal l Ol,

terminal 102, the cleetro-nmgnet 14 which controls the n'iovcments ofthe lilll'll'-t{tl)l(}. l,

and a portion oftheconduCtorfi? toftlre:

hat? cry (i6.

50, 51, :32 engages catehfifl and operates the'lerer iii l an electricalcircuit is completed by the lever it making contact with the plate 6?,this circuit extending from the battery 06, through the conductor 67,

-tion of the cam 84 will move the spring-arm oft ears may intervenescribed, and during the extent of theclos- .heshaft 79 carries two cams84,

4 the contacts. 9-2 and 95 being fixedin position. In-the so hold theregulating clockwork *mecha vnecessary that the person in charge "of thethe m'agnet 69, conductor l03, the terminal 70, then through the metalframework carrying therlever (iOand to the plate 63, from there throughthe conductor 65 back to the,

battery 66, said circuit remaining closed I until the actuating tappetmoves clearof the ciut qh 53- of the lever 56. This exciting. of

the magnet 39 will cause its -armaturer73 to move on its fulcrumand.operate -the lever 75 and cause the latter to raise the brake 77from contact with the fan 78 and also to raise the lug 87 out of thenotch 86,

in this manner allowing the shaft 79 and the cams which it carriestorotatel- The rota- QO t-o cause its contact 91 to -he pressed intoengagement with the cOntact 92, and thus complete an electrical circuit.through the eleot-ro-magnets-44, 45,-as hereinbefore -deing of thisClIClHt the measuring chamber 32.3333, eto, will receive its supply ofpow dered substance, The camS-lis so shaped that it will allow thecircuit to be broken by means of the spring arm at the timetliatt-hemeasurinfi; chamberis full. The

continued rotation of the shaft 79 causes the cam 85 to act oil-springarm93 to move .the contact 94 into engagement with the con-tact 95, andso COHlliltite another circuitthrough the electro-magnet 14,.thusliberating the turn-table 1, which is thus allowed to move forward thespace of 'one tooth i n order to bring the next or succeeding recep=taclejii into positionifor receivingta suipply oo of. powderedsubstance. This latter current-- need only be of momentary "duratioiiand the shape of the cam 85 is so arranged as' to cause a quiclebreakingof the circuit. The" further rotation of theshaft 79 will bring- 10thenotch, 86topposite to the lug 87, whi'el'r J will fall'therein andarrest'the motionof said shaft 79; and at the :s'ametin'ie the: brake 77will contact with the fan 78 and 11o nism against further operation. Itwill thus he-Qsee n that I employ two separate ClOC v" work trainsponofor rotatingthe disk 49, r;- and the other for rotating the shafts. 79,83,015 the regulating mechanism. Iypreferably arrange an electric lampor lamps 104 in the circuit so as to indicate when a sample being taken.i

In addition to the periodical takingot. samples in the manner described,lt' is often works, such as for instance-a flourman;

7 x a Y may wish samples to lie-taken say/from The operation of myimproved apparatus to'llows:-\ Vhen one of the tappets' SWliTCliQS 105,108 are arranged i11elee,;, The switch. completes a trieal circuit.circuit through the electromagnets 44, 45,

in order to cause the opening of the meas uring chamber to receive itssupply or sample, and this switch is held so as to keep the circuit openfor a sufiicient length of time for said measuring chamber to be filled,when said circuit is broken. The said circuit includes the conductor 67,the switch 105, the conductor 107, the conductor 97, and the magnets 41,45. The other switch 106 is only necessary to be momentarily operated inorder to release the turn-table 1, so that it may carry the next'orsucceeding: receptacle beneath the chute 24., and this circuit jincludcsthe conductor 6?, switch 106,-e'onductor 10S, conductor 100,

' magnet 11, and conductor 97. The switch US may be moved so as to putthe whole of the'elcctrical apparatus out of operation.

The. above descriptio set forth my in vention as applied to apparatusfor taking sample's of powdered substances, and in order to enablesamples of liquid substances to be taken, it is only necessary to makeslight alterations from the: apparatus above described. nisins andelectrical circuits are employed; so is the turn-table 1 and partsoperating it, and also the series of receptacles 3, which in this caseare or may be of a different shape from those above described. .109 (oran clectrodnagnet) is employed to operate a valve 110 (Fig. 8) mountedin the chamber 111 of a .tube or pipe 112 through which passes theliquid to be sampled, said solenoid 109 corresponding with theelectromagnets 4-1, 45, so thatby arranging the length of time that thecircuit is closed a u'icasurc-d quantity of liquid is supplied throughthe valve 110. to the receptacle 3.

The said valve 110 is preferably held down upon, its seat by a spring1.11 and the valve spindle 113 preferably forms part of the core of thesolen id 105 it will thus be seen that the valve 110 is'opcratcd inexactly the same manner as is the measuring chumbcr 232., 3abovedescribed. v

.l'ii order to cover the szunplcs after they have bccn deposited in thereceptacles 3, l mount upon the. plate 23 a magazine tube 119 for aseries of disks 120. A disk 117 provided. with a series of openings 118is mounted to rotate on the plate 23 so that the o 'icnings 118 willsucrrssively pass under the tube 119. The spindle 121 of said disk 117.is provided with a chain wheel or the like 122 which gears by means of achain 123 with a chain wheel 121 mounted upon a sleeve 12%, extendingover the central spindle or support A. lly this means,- as

"the turn-table 1 is rotated by its ratchet dc vice (i as hcrciubcforedescribed, so also will the disk '1 17 be rotated, and a cover or smalldisk 120 will fall into each of the openings 118. \Vhcn .any opening 118comes over or coincides with the opening in The same two clockworkmccha- The solenoid move clear of the switch 1115.

. receptacle 3 which has last received its supply of liquid and beenmoved away the space of one tooth of the disk 1, one of the disks 120will fall within the neck of the receptacle 3 beneath so that saidreceptacle will have a lid or cover 120 deposited in or over it.immediately after being moved away from the position which it occupiedwhile being filled.

Y Instead of making use of the. valve 110 as shown by F lg. 8, I maymake use of a vessel which actually weighs the quantities deliv crcd tothe receptacles 3 and this is effected by making use of a balancedreceptacle 126 which when in the position indicated by Fig. 10 completesan electrical circuit, but which on receiving a' certain quantity ofliquid movcson its fulcrum and breaks the contact between itsprojection-196" and the contact 127 mounted on a suitable fixed p0rtionof the apparatus. \Vhen said vessel 126 has received the quantity ofliquid dell'((l. it will automatically cause the valve 110 to bereturned to its seating by means of its spring while it delivers itssupply of liquid to the receptacle 3 beneath. I y

It will be readily understood of course that the mechanism for supplyingcovering disks shown in Fig. S may be employed in a machine having thefeatures shown in Fig. 11). which latter figure is not intended toillustrate the entire machine.

I may arrange a switch connection with the turn-table 1 for the purposeof auto lllulli l'lly':!1l( llllg the operation of the ma-- chine wheneach of the receptacles 3 has re-- ccivcd its quantity of powdered orliquid substances. Referring, to Figs. 12 to 15 inclusivc. l may. forthis purpose employ two arms 1218. 13!). projecting from the turntable 1tl igs. 12 and 13). these arms operating upon plates HO and 141 mountedon a fixed support .1. Said plates bear upon rods 11;, 113. mounted toslide vertically in support a. the lower ends of the rods beingpivotally connected to a lever 1.411 having an extended cud 145 formaking contact with an electrical switch 116, this switch being of anyappropriate construction and mountcd in the electrical circuitcontrolling the movcn cnls of the valve or chamber 32, 33 and theturn-table 1. 'hcn the plate 141 is operated so as to press down the rod143 clcctrical toiitact will be made between the end 145 of the switchlcvcr 144 and the switch 14-13. while when the plate 141 is released bythc arm 1 19 passing clcar thereof and the plate 1-10 is presseddownward by the arm 1%. the depression of the rod 142 will cause the cnd1-15 of the lever 111 to As the turntablc 1 moves in the directionindicated by the arrow (1. Fig. 19, the arm 1 passes over the plate 140and operates the lever 144 to break the electrical circuit, this takingplace when all the receptacles 3 have receiyed their supply of material,and therefore said turn-table cannot be moved to bring a receptacle intoposition to receive a second supply.

\Vhen the turn-table is operated in the opposite direction to we l. upits driving spring the arm 139 will press down upon the plate t ll andause the plate 140 to rise so that on th turntable being turned in thisreverse direction through one revolution further movement is preventedby the arm 11-38 coming into contact with said plate 110. Fig. 13 showsthe pars when in this position. it will thus be seen that the samplingmachine is entirely thrown out of operation when the receptacles 3 haveeach received their quantity of material, While the winding up of thetable also controlled so as to automatically allow the cutting out ofthe electrical operating device to take place at the exact timerequired.

In order that with my improved apparatus any certain number of samplesmay be. taken and then the apparatus automatically thrown out of use. Imake use of a ratchet wheel or disk 147 (Figs. 11 and 15) and providethe surface of this disk with numerals corresponding to the number ofteeth. Beneath this disk I provide aiiother disk 148 upon aportion ofwhich is an insulated part 145). This disk 118 is arranged in circuit,by means of the contacts 150, 151, with the main circuit 67. Arranged inconnection with the teeth of the disk 147 are two solenoids 152, 153.The solenoid 152 is arranged in circuit with the electrical circu t foroperating the electro-magnets 4t, 45 (Fig. 11), for causing the feed ofa sample of powder or like substance, while the solenoid 153 is incircuit with the electrical circuit for operating the electro-magnet1-1, which liberates the turntable 1. It will thus be seen that when thesolenoid 1.32 is operated it will release the disk 147 to move the sameof one half of a tooth. where it held by the core of the solenoid 1533.However when the turn-table 1 is liberated this solenoid 153 is alsoenergized and liberates the disk 147 so as to move the remaining spaceof half of a tooth, said disk 147 being therefore moved at the sameintermittentrate of speed as the turntable 1. When this disk 117 reachesa certain position. s ch as when the number 12 moves opposite anindicator 154, then the insulated part late arrives under the contact150 {13 .1 thus throws the whole apparatus out of operation by breakingthe main circuit 67. i

From the foregoing description it will be seen that should it be desiredto take sa seven samples at periodical times, the dis; 147 is rotated bymeans of its handle 155,

until the figure 7 is opposite to the indicator 154. Then when the disk147 has moved the space of seven teeth, the main electric circuit willbe broken in the manner hereinhefore described so that no more samplescan be taken by the clockwork mechanism even though the disk 19 (Fig.11) may continue to rotate.

From the foregoing description it will readily be seen that a cntral clck or clockwork may control a large number of sampling machines, whileit cannot be tampered with by the operative, neither is it exposed tothe dust, dirt or fume. 1n proximit to the machine or other parts fromwhicn the sample or samples is or re taken, while by suitably arrangingthe contacts and cir cuits of the regulating clockwork mechanism, theperson in charge thereof may arrange for a sample to be taken from onemachine every quarter of an hour, another machine every half hour, andanother machine every hour, or at any other appropriate regular periodsof time, and further. he may, whenever desired, cause a special or extrasample to be taken from any or all of the machines without disturbingthe 'tak ing of the samples at their regular periods.

buch being the nature and object of my said invention what I claim is 1.Apparatus for periodically taking samples of material, comprising a.turn-table for receptacles, means for supplying material to suchreceptacles, electrically operated devices for controlling theoperations of the turn-table and the supplying means, and regulatingclockwork mechanism for controlling the circuits of said electricallyoperated devices.

2. Apparatus for periodically taking samples of material, comprising aturn-table for receptacles, means for supplying material to suchreceptacles, electrically.operated devices for controlling theoperations of the turn-table and the supplying means, regulatingclockwork mechanism for controlling the circuits of said electricallyoperated devices, and means independent of said regulating clockworkmechanism to cause the turn-table and the supplying devices to operateat will.

3. i paratus for periodically taking samples 0 material, consisting of asource of supply having a valve, means for operating the valve, meansfor bringing receptacles successively into proximity to said valve, saidclockwork devices mounted at a distance from the other parts of theapparatus for controlling the means for operating said valve and themeans for moving the receptacles.

4. In apparatus for taking samples of material, a source of supplyhaving a valve, electrical devices for operating said valve, aturn-table carrying a series of receptacles,

means for moving said turn-table, electrical devices for controllingsaid moving means, and clockwork mechanism for controlling both of saidelectrical devices.

5. In apparatus for taking samples of material. a source of supplyhaving a valve, electrical devices for operating said valves, aturn-table carrying a series of receptacles, means for rotating the.turn-table intermit tently. electrical devices for controlling saidturn-table moving means, clockwork devices for controlling both of saidelectrical devices whereby samples may be taken at predetermined periodsof time, and additional switche whereby samples may be taken at tilnesother than those predetermined by the clockwork devices.

ti. In apparatus or taking samples of material, a Fupply passageway. avalve mounted in said passageway, electrical devices for opening said"alve. a turn-table carrying a series of receptacles. means for rotatingsaid turn-table. electrical devices for controlling said rotating means,means for closing the receptacles, =nd clockwork devices for controllingthe operations of said electrical devices.

7. In apparatus for taking samples of material, a turntable adapted tocarry a series of receptacles, a spring for causing the rotation of saidturn-table, electrical devices for controlling the movement of saidrotary table, a valved measuring chamber mounted above said receptacles,electromagnet and lever devices for opening and closing the valve of thechamber, and clock work devices for controlling the movements of saidlever and electro-magnetic devices.

8. In apparatus for taking samples of material. a turn-table adapted tocarry a series of receptacles, means for moving said turntable, ratchetteeth formed on said turntable, a ratchet or catch for operating inconnection with said teeth, an electro-magnet for moving said ratchet,or catch into and out of engagement with said ratchet teeth, clocluvorkdevices for controlling the operations of said electroanagnet, and meansfor feeding samples of material to said receptacles.

t). In apparatus for taking samples of material, a turn-table adapted tocarry a series of receptacles, means for rotating said turntable. meansfor feeding samples of material to said receptacles, a clockworkmechanism, a disk rotated by said clockwork mechanism, tappets carriedby said disk, a lever moved by said tappets, electrical circuits, leverdevices for causing one electrical circuit to be completed through themovements of said disk, an electro-magtaken at times other net in saidcircuit, an armature and other intermediate parts for causing thecompletion of another circuit and putting into operation anotherclockwork train, to cause the feeding of material to a receptacle, meansfor causing said circuit to be broken, means for causing another circuitto be completed, and for bringing into action devices for regulating themovement of the turntable, and means for breaking the latter circuit andarresting the movements of the second clockwork train.

10. In apparatus for taking samples of material, a turn-table adapted tocarry a series of receptacles, means for rotating said turn-table, achamber having a valve for teeding material to the series ofreceptacles, a disk having nism for driving said disk, electl talcircuits. lever devices for transmitting motion so as to complete oneelectrical circuit, means whereby the completion of the first circuitmay cause the completion of another circuit, regulating clockworkmechanism, cam devices operated thereby, electrical contacts operated bysaid cams, and electrical connections from these parts to theirrespective electroamtgnets.

ll. In apparatus for taking samples of material. a turn-table adapted tocarry a series of receptacles, means for rotating said turntable,electrical devices for controlling said turn-table rotating means, achamber having a feeding valve, electrical devices for causing theopening of said feeding valve. :1 clockwork mechanism, a disk driven bysaid clockwork mechanism, tappets car ried by said disk, and meanscooperating with said tappets and the other devices mentioned wherebysamples of material are periodically fed to the receptacles.

12. In apparatus for taking samples of material. a turn-table adapted tocarry a series of receptacles, means for rotating said turn-table,electrical devices for controlling said turn-table moving means, achamber having a feeding valve, means for causing the opening andclosing of said valve cham ber, clockwork devices and electricalconnections for causing samples to be taken at predetermined times, andswitch devices whereby the additional samples may be than thosepredetermined.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

THOMAS ROBERTS.

'itnesses:

Jonx 'nrrnnnao 7 W. GREENWOOD.

tappets, a clockwork mecha-

